differentiation
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C1 noun /ˌdɪfəˈrɛnʃɪˈeɪʃən/

differentiation

差別化, 分化
Meaning
The action or process of differentiating or distinguishing between things.
Example
Differentiation from competitors can create a unique market position.
競合他社との差別化により、ユニークな市場ポジションを作り出すことができます。
C2 verb /ˌdɪskəmˈpoʊz/

discompose

動揺させる
Meaning
To disturb the order or calmness of something or someone.
Example
The unexpected question seemed to discompose her.
予期しない質問が彼女を動揺させたようだ。
C2 noun /dɪˈstreɪnər/

distrainor

財産差し押さえ人
Meaning
a person, usually a landlord, who seizes another's property for unpaid debt or rent
Example
The distrainor took possession of the tenant's car until the debt was cleared.
ディストレイナーは、借金が清算されるまで、賃借人の車を押収しました。
C1 noun /ˌdɪsbɪˈliːvər/

disbeliever

不信者
Meaning
a person who does not believe in something, especially a religion or idea
Example
He was called a disbeliever for rejecting the traditional faith.
彼は伝統的な信仰を拒否したため、不信者と呼ばれました。
B2 verb /drɪp/

drip

滴る
Meaning
to fall or let fall in drops
Example
Water was dripping from the broken pipe.
壊れたパイプから水が滴っていました。
C1 adjective /ˈdraʊ.zi/

Drowsy

眠い; 疲れた; 無気力な
Meaning
feeling sleepy and lethargic; half asleep; tired
Example
I felt drowsy after the heavy meal.
重い食事の後、眠気を感じました。
C2 noun dɪsˈbɜːs.mənt

disbursement

支払い
Meaning
The payment of money from a fund.
Example
The company's disbursement of salaries was delayed.
会社の給与の支払いが遅れました。
B2 noun /ˈdeb.ɪt/

Debit

デビット; 借金; 引き落とし
Meaning
an entry recording an amount owed; money taken from a bank account
Example
The bank showed a debit of fifty dollars from my checking account.
銀行は私の当座預金口座から50ドルのデビットを表示しました。
C1 verb /daʊs/

douse

消す / 注ぐ
Meaning
to pour liquid over; to extinguish a fire or light
Example
Firefighters doused the flames with water.
消防士たちは水で炎を消しました。
C1 noun dəˌmɛstɪˈkeɪʃən

domestication

家畜化
Meaning
The process of taming an animal and keeping it as a pet or for farm produce.
Example
Domestication of animals has been crucial for human survival.
動物の家畜化は人間の生存にとって重要だった。
C2 adjective /dɪsˈpɛptɪk/

dyspeptic

消化不良, イライラした
Meaning
Relating to indigestion or having a gloomy or irritable disposition.
Example
After the heavy meal, he felt dyspeptic and uncomfortable.
重い食事の後、彼は消化不良で不快に感じました。
C1 verb /dɪˈflɛkt/

deflect

反らす / 避ける
Meaning
to cause something to change direction; to avoid answering directly
Example
The shield deflected the incoming arrow.
盾は飛んできた矢を反らした。
C2 noun /ˈdaɪˌsɪləbəl/

disyllable

二音節語
Meaning
a word consisting of two syllables
Example
The word 'happy' is a disyllable.
‘ハッピー’という単語は二音節語です。
C2 noun /dɛnˈdrɒlədʒi/

dendrology

Meaning
the scientific study of trees and woody plants
Example
He is studying dendrology at the university.
B2 verb /dwel/

dwell

住む
Meaning
to live in a place; to think about something for a long time
Example
They dwell in a small cottage by the lake.
彼らは湖の近くの小さな家に住んでいます。
B2 adjective /ˌdɪsədˈvæntɪdʒd/

disadvantaged

恵まれない
Meaning
Lacking the basic resources or conditions needed for a good standard of living or equal opportunities.
Example
The program provides support to disadvantaged children.
そのプログラムは恵まれない子供たちに支援を提供しています。
C2 adjective /dɪˈmoʊniˌæk/

demoniac

悪魔的な
Meaning
possessed, produced, or influenced by a demon; frenzied or violent
Example
The soldiers fought with demoniac fury.
兵士たちは悪魔的な怒りで戦った。
C2 adjective /ˌdɒktrɪˈnɛər/

doctrinaire

教条主義者
Meaning
stubbornly devoted to a theory or doctrine without regard to practical considerations
Example
His doctrinaire approach to politics alienated many supporters.
彼の教条主義的な政治アプローチは、多くの支持者を遠ざけた。
C1 noun/verb /dɛnt/

dent

へこみ
Meaning
a small hollow mark on the surface of something; to make a small hollow mark
Example
The accident left a dent in the car door.
事故で車のドアにへこみが残りました。
C2 adjective /ˈdjuːtiəbl/

dutiable

課税対象
Meaning
subject to customs duty or tax
Example
Imported electronics are often dutiable at the border.
輸入された電子機器はしばしば国境で課税対象となります。
B2 verb /dɪˈmɒlɪʃ/

demolish

取り壊す
Meaning
to destroy completely, especially a building or structure
Example
The city decided to demolish the old stadium to build a new one.
その都市は新しいものを作るために古いスタジアムを取り壊すことに決めました。
C1 adjective /ˈdwɪndlɪŋ/

dwindling

減少
Meaning
Gradually reducing in number, size, or strength.
Example
The villagers relied on dwindling water supplies.
村人たちは減少していく水の供給に依存していた。
A2 noun dɪˈskrɪpʃən

description

説明
Meaning
A spoken or written account of a person, object, or event.
Example
His description was vivid.
彼の説明は生き生きとしていた。
B2 noun daɪˈmen.ʃən

dimension

次元
Meaning
An aspect or feature of a situation, problem, or thing; a measurable extent.
Example
Renewable projects add a new dimension to urban planning.
再生可能エネルギープロジェクトは都市計画に新しい次元を加えます。
C2 adjective /dɪˈluːsəri/

delusory

幻想的な
Meaning
Based on illusion; not real.
Example
He was filled with delusory hopes of becoming famous overnight.
彼は一夜にして有名になるという幻想的な希望に満ちていた。
C2 noun /draɪd ˈfɛnjʊˌɡriːk livz/

Dried Fenugreek Leaves

乾燥フェヌグリークの葉
Meaning
dehydrated leaves of the fenugreek plant used as a herb in cooking
Example
Add dried fenugreek leaves to the curry for extra flavor.
カレーに乾燥フェヌグリークの葉を加えて、さらに風味を加えます。
C1 verb /dɪˈraɪd/

deride

嘲笑する
Meaning
to mock or ridicule someone or something
Example
The critics derided the new movie for its poor script.
批評家たちはその新しい映画を悪い脚本のせいで嘲笑した。
B2 noun /dɪsˈpoʊzl/

disposal

廃棄
Meaning
the action or process of getting rid of something
Example
The disposal of waste is crucial for maintaining a clean environment.
廃棄物の処理は清潔な環境を維持するために重要です。
B1 noun /ˌdes.tɪˈneɪ.ʃən/

Destination

目的地
Meaning
the place to which someone or something is going; the ultimate purpose or end point
Example
Paris was their dream destination for their honeymoon trip.
パリは彼らのハネムーン旅行の夢の目的地でした。
C1 adjective /dɪˈskriːt/

discrete

離散的
Meaning
individually separate and distinct
Example
The course is divided into three discrete modules.
コースは3つの離散的なモジュールに分けられています。
C1 adjective /dɪˈsɪd.ju.əs/

deciduous

落葉樹
Meaning
Referring to trees that shed their leaves seasonally, typically in autumn.
Example
Oak and maple trees are deciduous, shedding leaves in autumn.
オークとカエデの木は落葉樹で、秋に葉を落とします。
C1 adjective /dɪˈvaʊt/

devout

献身的
Meaning
Deeply religious or sincere.
Example
He is a devout believer who prays every day.
彼は毎日祈る献身的な信者です。
C1 adjective /dɪˈsɜːrnəbl/

discernible

明白な
Meaning
able to be seen, recognized, or understood
Example
There was a discernible change in his behavior.
彼の行動には明らかな変化があった。
C2 noun /dɪˈsweɪʒən/

dissuasion

説得しないこと
Meaning
The act of persuading someone not to take a course of action.
Example
Her dissuasion prevented him from making a bad investment.
彼女の説得しないことは、彼が悪い投資をしないようにしました。
C1 verb /doʊt/

dote

溺愛する
Meaning
to show excessive love or fondness for someone or something
Example
She tends to dote on her grandchildren.
彼女は孫たちに溺愛する傾向があります。
B1 noun /dɪˈlaɪt/

Delight

喜び; 楽しみ
Meaning
a feeling of happiness or pleasure; something that gives great pleasure
Example
The children's laughter filled her heart with pure delight.
子供たちの笑い声は彼女の心を純粋な喜びで満たしました。
B2 noun /ˈdɛməˌkræt/

democrat

民主主義者
Meaning
a supporter of democracy or a member of the Democratic Party in the US
Example
He is a strong democrat who believes in equal rights.
彼は平等な権利を信じる強い民主主義者です。
C2 verb /dɪˈskraɪ/

descry

遠くで見る
Meaning
to catch sight of something, especially something distant or obscure
Example
From the hilltop, they descried a small village in the distance.
丘の頂上から、彼らは遠くの小さな村を見た。
C1 adjective /ˈdɛkədənt/

decadent

堕落的, 贅沢な
Meaning
Characterized by or reflecting a state of moral or cultural decline; excessively self-indulgent.
Example
The party was filled with decadent luxury and excess.
パーティーは堕落的な贅沢と過剰で満たされていました。
C1 verb /dɪˈfeɪm/

defame

名誉毀損
Meaning
to harm someone's reputation by spreading false information
Example
He was defamed by malicious rumors.
彼は悪意のある噂で中傷されました。
C1 noun /djuːˈɛt/

duet

デュエット
Meaning
a musical performance by two singers or instrumentalists
Example
They sang a beautiful duet together on stage.
彼らはステージで一緒に美しいデュエットを歌った。
B1 noun /ˈdɪstrɪkt/

district

地区
Meaning
a specific area of a country, city, or town, often with official boundaries
Example
She lives in the northern district of the city.
彼女は街の北地区に住んでいます。
A1 noun /deɪ/

Day

Meaning
a period of twenty-four hours; the time during which there is light
Example
What a beautiful day it is today with clear blue skies!
今日は青空が広がる美しい日です!
C2 verb /ˈdiːfælˌkeɪt/

defalcate

横領する
Meaning
to misuse or embezzle money that one is responsible for
Example
The accountant was accused of defalcating company funds.
会計士は会社の資金を横領したと非難されました。
C1 noun /ˈdrɛsˌmeɪkər/

dressmaker

洋裁師
Meaning
A person who makes or alters women's clothing professionally.
Example
The dressmaker crafted a beautiful gown for the bride.
洋裁師は花嫁のために美しいドレスを作った。
C1 verb /dɪsˈɑːrm/

disarm

武装解除する
Meaning
to take weapons away from someone; to make someone feel less hostile
Example
The soldiers were ordered to disarm the rebels.
兵士たちは反乱者の武装を解除するよう命じられた。
B1 verb /ˈdɪfər/

differ

異なる
Meaning
to be unlike or distinct from something else
Example
Opinions differ on this issue.
この問題について意見が異なります。
C1 noun /ˈdɪm.pəl/

Dimple

えくぼ
Meaning
a small depression in the flesh, either one that exists permanently or one that forms when smiling
Example
Her charming dimples appeared whenever she smiled at the children.
彼女の魅力的なえくぼは、子供たちに微笑むたびに現れました。
C1 noun /ˌdɜːrməˈtɑːlədʒi/

dermatology

皮膚科学
Meaning
The branch of medicine concerned with the skin and its diseases.
Example
He studied dermatology at medical school.
彼は医学部で皮膚科学を学んだ。
C1 verb /diːm/

deem

みなす, 判断する
Meaning
to regard or consider in a specified way
Example
The project was deemed a success by the board.
そのプロジェクトは理事会によって成功だと見なされました。
C1 verb /drɛntʃ/

drench

びしょ濡れにする
Meaning
to make someone or something completely wet
Example
The sudden rain drenched the players on the field.
突然の雨がフィールドの選手たちをびしょ濡れにした。
C2 noun /ˌdɪskwɪˈzɪʃən/

disquisition

論文
Meaning
A long or elaborate discussion or written essay on a particular subject.
Example
The professor gave a lengthy disquisition on ancient philosophy.
教授は古代哲学についての長い論文を発表しました。
C1 noun /dɪˌpriː.ʃiˈeɪ.ʃən/

depreciation

減価償却
Meaning
A reduction in the value of an asset with the passage of time, due to wear and tear.
Example
The car's depreciation rate is high after five years.
車の減価償却率は5年後に高くなります。
C1 verb /dɪsˈɡrʌntl/

disgruntle

不満にさせる
Meaning
to make someone dissatisfied or discontented
Example
The unfair treatment disgruntled the workers.
不公平な扱いが労働者を不満にさせた。
C1 verb /ˈdæb.əl/

dabble

軽く取り組む
Meaning
To take part in an activity in a casual or superficial way.
Example
He dabbled in painting during his college days.
彼は大学時代に絵を描くことを楽しんでいた。
C2 adjective /dɪˈstreɪ/

distrait

ぼんやりした
Meaning
deeply distracted or absent-minded, often due to worry or grief
Example
He looked distrait after hearing the sad news.
悲しい知らせを聞いた後、彼はぼんやりしているように見えた。
C2 adjective /dæŋk/

dank

湿っていて寒い
Meaning
unpleasantly damp and cold
Example
The basement was dark and dank, filled with a musty smell.
地下室は暗くて湿っていて、悪臭が充満していました。
C2 noun /ˈdɔːrmər/

dormer

ドーマー窓
Meaning
A window that projects vertically from a sloping roof.
Example
The old house had a dormer overlooking the garden.
その古い家には庭を見下ろすドーマー窓がありました。
B2 noun /dʌv/

Dove

Meaning
a small, gentle bird with soft cooing sounds, often white and symbolizing peace
Example
The white dove flew peacefully across the blue sky.
白い鳩は青い空を平和に飛んでいた。
A1 noun /ˈdɪnər/

Dinner

夕食
Meaning
the main meal of the day, typically eaten in the evening
Example
The family gathered for dinner at 7 PM.
家族は午後7時に夕食のために集まりました。
A1 preposition /ˈdjʊərɪŋ/

during

〜の間に
Meaning
throughout the course of a period of time
Example
I fell asleep during the movie.
私は映画の間に寝てしまいました。
A2 adjective /ˈdɜː.ti/

Dirty

汚い; よごれた; 不快な; 道徳的に堕落した
Meaning
not clean; covered with dirt; unpleasant; morally corrupt
Example
The kitchen was dirty after cooking.
料理後、台所は汚かった。
C1 adjective /dɪˈbeɪst/

debased

劣化した
Meaning
having lost quality, value, or moral character
Example
The debased currency lost the trust of the people.
劣化した通貨は人々の信頼を失った。
C2 noun /dɪˈpoʊnənt/

deponent

証人
Meaning
A person who gives testimony under oath, especially in a written deposition.
Example
The deponent confirmed the accuracy of the statement during the trial.
証人は裁判中に証言の正確性を確認しました。
A2 noun /dɪˈpɑːrtmənt/

department

部門
Meaning
a division of a large organization such as a government, university, or company
Example
She works in the marketing department.
彼女はマーケティング部門で働いています。
A2 noun /dɪˈzaɪnər/

designer

デザイナー
Meaning
a person who plans and creates the form or structure of something
Example
The fashion designer presented her new collection.
ファッションデザイナーは新しいコレクションを発表しました。
B1 noun dɪˈskʌvəriz

discoveries

発見
Meaning
The action or process of finding or learning something for the first time; facts or things discovered.
Example
His discoveries revolutionized multiple fields.
彼の発見は複数の分野で革命を起こした。
C1 verb /ˈdɪsləkeɪt/

dislocate

脱臼する
Meaning
To disturb the normal position of something, especially a joint in the body.
Example
He dislocated his shoulder while playing football.
彼はサッカーをしているときに肩を脱臼しました。
B2 verb /dɪˈspætʃ/

dispatch

送る
Meaning
to send off to a destination or for a purpose
Example
The company dispatched aid to the flood victims.
その会社は洪水の被害者に援助を発送しました。
B1 noun /ˌdek.əˈreɪ.ʃən/

Decoration

装飾; 飾り; 賞;
Meaning
the process or art of decorating something; ornamental items used to beautify
Example
The Christmas decoration transformed the ordinary room into a festive wonderland.
クリスマスのデコレーションは、普通の部屋をお祝いのワンダーランドに変えました。
C1 adjective /ˈdaʊn.kæst/

downcast

Meaning
feeling sad, dejected, or with lowered eyes
Example
He looked downcast after hearing the bad news.
C1 noun, verb /dɪsˈɑːnər/

dishonor

Meaning
a state of shame or loss of respect; to bring shame upon someone or something
Example
The soldier felt he had brought dishonor to his family.
B2 noun /diˈoʊ.dər.ənt/

Deodorant

デオドラント
Meaning
a substance that removes or conceals unpleasant smells, especially bodily odors
Example
She applied deodorant before going to the gym to stay fresh during workout.
彼女はジムに行く前に、トレーニング中にさっぱりとした状態を保つためにデオドラントを塗りました。
C1 noun dɪˈsʌɪsɪvnɪs

decisiveness

決断力
Meaning
The ability to make decisions quickly and effectively.
Example
His decisiveness during the crisis saved the company.
危機の際、彼の決断力が会社を救った。
B1 noun /dɪˈsɪʒənˌmeɪkɪŋ/

decision-making

意思決定
Meaning
the process of making decisions, especially important or business-related decisions
Example
The CEO's decision-making was crucial for the success of the company.
CEOの意思決定は、会社の成功にとって重要でした。
B2 verb /daɪˈdʒest/

digest

消化する
Meaning
to break down food in the body; to think about and understand
Example
It takes time to digest a heavy meal.
重い食事を消化するのには時間がかかります。
C1 noun /dɪˈmiːnər/

demeanor

態度
Meaning
a person's outward behavior or appearance
Example
Her calm demeanor impressed everyone at the meeting.
彼女の冷静な態度は会議で皆に感銘を与えました。
C2 adjective /dɪˈklæməˌtɔri/

declamatory

力強い演説スタイル
Meaning
speaking in a loud, rhetorical, or dramatic way
Example
The politician’s declamatory style impressed some but irritated others.
その政治家の力強い演説スタイルは一部の人々に感銘を与えたが、他の人々には不快感を与えた。
C2 noun /ˈdrækmə/

drachma

ドラクマ
Meaning
The basic monetary unit of Greece before the adoption of the euro.
Example
The old coin collection included a silver drachma.
古いコインのコレクションには銀のドラクマが含まれていました。
C2 noun /dɪˈpɑːzɪtər/

depositor

預金者
Meaning
a person who places money in a bank or financial institution
Example
The bank provides insurance to protect depositors’ funds.
銀行は預金者の資金を保護するために保険を提供しています。
C2 adjective /dɪsˈkʌmfɪtɪŋ/

discomfiting

不快な
Meaning
Causing unease, embarrassment, or discomfort.
Example
His discomfiting questions made everyone shift uncomfortably in their seats.
彼の不快な質問は、皆が座席で不安そうに動かせるようにさせた。
A2 noun dɪˈskʌʃ.ənz

discussions

議論
Meaning
The action or process of talking about something in order to reach a decision or to exchange ideas.
Example
Discussions promote collaboration.
ディスカッションは協力を促進します。
C1 noun dɪˈspær.ə.ti

disparity

格差
Meaning
A great difference or inequality.
Example
Disparity between countries must be reduced.
国々の間の格差は減少するべきです。
C1 noun /dɪˈfɔː.mə.ti/

Deformity

変形; 身体的欠陥
Meaning
a distorted or unnatural shape or form; physical malformation
Example
The accident caused a permanent deformity in his left hand.
事故は彼の左手に永続的な変形を引き起こしました。
C1 verb /dɪˈluːd/

delude

だます
Meaning
To mislead someone into believing something that is not true.
Example
He deluded himself into thinking he could win the race without training.
彼は訓練なしでレースに勝てると思い込み、自分をだました。
B2 adjective /dɪˈzaɪərəbl/

desirable

望ましい
Meaning
worth having or wanting; attractive
Example
The location of the house was highly desirable, with great views.
その家の場所は非常に望ましく、素晴らしい景色がありました。
C1 adjective /ˌdɪfəˈrɛnʃəl/

differential

差別的
Meaning
Relating to or showing a difference; involving a distinction.
Example
There is a differential treatment between the two groups.
2つのグループ間に差別的な扱いがあります。
C2 verb /dɪˈbɑːrk/

debark

下船する
Meaning
to disembark or get off a ship, aircraft, or vehicle
Example
The passengers debarked as soon as the ship docked.
乗客は船がドックに着いたときに下船しました。
A2 noun /dɪˈɡriː/

degree

学位 / 程度
Meaning
an amount or level of something; an academic qualification
Example
She earned a degree in engineering.
彼女は工学の学位を取得しました。
C1 adjective deft

deft

器用
Meaning
Neatly skillful and quick in one's movements; dexterous and adroit.
Example
The artist's deft hands created a masterpiece.
アーティストの器用な手は傑作を作り出しました。
A2 verb dɪˈvɛləp

develop

発展させる
Meaning
To grow or bring to a more advanced or effective state; to start to exist, experience, or possess gradually.
Example
Develop a brand based on your passion and skills.
情熱とスキルに基づいてブランドを発展させましょう。
A2 verb /dɪˈzaɪn/

design

Meaning
to plan and create something with a particular purpose or look
Example
She will design the new company logo.
C2 noun/adjective /ˈdɪstæf/

distaff

女性に関連、母系
Meaning
Relating to women or the maternal side of a family; also a tool for spinning thread.
Example
She came from the distaff side of a noble family.
彼女は名家の母系から来た。
B2 noun /ˌdɪsəˈɡriːmənt/

disagreement

不一致
Meaning
a failure to agree or a difference in opinion
Example
Their disagreement on the issue caused a delay in the project.
その問題に対する彼らの不一致はプロジェクトの遅延を引き起こしました。
C2 verb /ˈdɒdə/

dodder

震えながら歩く
Meaning
To move in a weak and unsteady way, especially due to old age.
Example
The old man doddered across the street with a cane.
老人は杖をついて震えながら通りを歩いていました。
A2 adverb /dəˈrɛktli/ or /daɪˈrɛktli/

directly

直接的に
Meaning
in a straight line or manner; without anything in between
Example
She spoke directly to the manager about her concerns.
彼女は自分の懸念について、マネージャーに直接話しました。
C1 noun /ˈdɔːrˌkiːpər/

doorkeeper

門番
Meaning
A person whose job is to guard or manage the entrance of a building or room.
Example
The doorkeeper checked everyone’s passes before they entered the hall.
ドアキーパーは皆がホールに入る前に通行証を確認した。
C2 adjective /dɪsˈkɜrsɪv/

discursive

脱線的
Meaning
Tending to digress or move from topic to topic; lengthy and rambling.
Example
His discursive style made the lecture hard to follow.
彼の脱線的なスタイルは講義を追うのが難しかった。
C2 verb /diːˈlɪmɪt/

delimit

境界を設定する
Meaning
to fix the boundaries or limits of something
Example
The treaty was signed to delimit the borders of the two countries.
その条約は二国の境界を定めるために署名されました。
B1 verb /daɪn/

dine

食事する
Meaning
to eat a meal, especially the main meal of the day
Example
We usually dine at seven o'clock in the evening.
私たちは通常、夕方七時に食事します。
C1 verb /dɪˈpoʊz/

depose

Meaning
to remove someone from office or power, especially suddenly and forcefully
Example
The rebels managed to depose the dictator after years of unrest.
B2 verb /dɪˈtekt/

detect

検出する
Meaning
to discover or identify the presence or existence of something; to notice something that is not immediately obvious
Example
The security system can detect movement in the building.
セキュリティシステムは建物内の動きを検出できます。
C2 verb /ˌdɪsəˈvaʊ/

disavow

否定する
Meaning
to deny responsibility for or connection with something
Example
He disavowed any involvement in the scandal.
彼はスキャンダルへの関与を否定した。
C2 verb /ˈdɛsɪkreɪt/

desecrate

冒涜する
Meaning
to treat a sacred place or object with disrespect or violation
Example
The vandals desecrated the ancient temple walls with graffiti.
ヴァンダルたちは古代の寺院の壁をグラフィティで冒涜しました。
C1 noun /dɪˈrɪʒən/

derision

嘲笑
Meaning
Contemptuous ridicule or mockery.
Example
His ideas were greeted with derision by the audience.
彼のアイデアは観客によって嘲笑された。
C1 verb /dɪˈfjuːz/

diffuse

Meaning
to spread over a wide area or among a large number of people
Example
The smell of fresh bread diffused through the entire house.
C2 verb /dɪˈfreɪ/

defray

費用を負担する
Meaning
to provide money to pay the costs of something
Example
The grant will help defray the cost of education.
その助成金は教育費用の負担を助けます。
B2 noun /ˌdɛm.əˈɡræf.ɪks/

Demographics

人口統計学
Meaning
Statistical data relating to the population and particular groups within it.
Example
Demographics help in targeted advertising.
デモグラフィックスはターゲット広告に役立ちます。
B1 adjective /dʌl/

Dull

退屈な; つまらない; 無気力な; 愚かな;
Meaning
lacking interest or excitement; not bright; lacking intelligence; tedious
Example
The lecture was very dull and boring.
その講義はとても退屈で退屈でした。
B1 noun ˈdɪdʒ.ɪ.təl tuːlz

digital tools

デジタルツール
Meaning
Electronic software and applications used for learning and educational purposes.
Example
Schools are integrating digital tools to enhance learning.
学校は学習を強化するためにデジタルツールを統合しています。
C1 verb /dɛlv/

delve

Meaning
To investigate deeply; to dig into a subject or area.
Example
The researcher delved into ancient manuscripts to find clues.
A2 preposition /dɪˈspaɪt/

despite

にもかかわらず
Meaning
Without being affected by; in spite of.
Example
He continued his work despite the difficulties.
困難にもかかわらず、彼は仕事を続けました。
C2 noun /ˈdɒldrəmz/

doldrums

Meaning
A state of inactivity, stagnation, or low spirits; also a region near the equator with calm winds.
Example
After the project failed, the team was stuck in the doldrums for months.
C2 noun /ˌdɪləˈtænt/

dilettante

愛好家
Meaning
A person who takes up an art, activity, or subject merely for amusement, especially in a superficial way.
Example
He was dismissed as a dilettante in the art world because he lacked formal training.
彼は芸術界で愛好家として退けられました、なぜなら正式な訓練が不足していたからです。
A2 noun /ˈdʌst.bɪn/

Dustbin

ゴミ箱
Meaning
a container for holding waste or garbage before disposal
Example
Please throw the paper into the dustbin after use.
使用後は紙をゴミ箱に捨ててください。
B1 verb /dɪsˈtrɪbjuːt/

distribute

配布する
Meaning
to give out or spread something among several people or places
Example
The teacher will distribute the test papers.
先生は試験の用紙を配布します。
C2 adjective /daɪˈɜːrnəl/

diurnal

昼行性
Meaning
active during the day; occurring daily
Example
Most birds are diurnal creatures, active in daylight hours.
ほとんどの鳥は昼行性の生き物で、日中に活動しています。
B2 noun /ˈdʌklɪŋ/

duckling

Meaning
a young duck
Example
The mother duck led her ducklings to the pond.
C2 adjective /ˌdɪskəmˈbɑːbjuleɪtɪd/

discombobulated

混乱した
Meaning
confused and disoriented; feeling unsettled
Example
She looked discombobulated after hearing the unexpected news.
予期しないニュースを聞いた後、彼女は混乱しているように見えた。
C2 noun /ˌdɛkəˈsɪləbəl/

decasyllable

十音節詩行
Meaning
A line of verse with ten syllables.
Example
The poet often wrote in decasyllable form.
詩人はしばしば十音節詩行で書いていた。
B2 noun /duːm/

doom

運命
Meaning
A terrible fate, destruction, or unavoidable bad outcome.
Example
The ancient prophecy foretold the city’s doom.
古代の予言は都市の運命を予見していた。